Effect of hydrostatic pressure on the corrosion behaviour of Ni–Cr–Mo–V high strength steel

Effect of hydrostatic pressure on the corrosion behaviour of Ni–Cr–Mo–V high strength steel was investigated by electrochemical measurements and SEM observation. The electrochemical noise (EN) data was analyzed based on non-linear dynamic theory. The experimental results revealed that hydrostatic pressure decreased the corrosion resistance of Ni–Cr–Mo–V steel and the corrosion at high hydrostatic pressure was more uniform due to the higher initiation rate and lower growth probability of metastable pitting.